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CVE-2026-53146— thunderbolt: Limit XDomain response copy to actual frame size

Quick assessment

Affected
Linux Linux
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.15版本存在安全漏洞，该漏洞源于tb_xdomain_copy函数在复制响应时未限制实际帧大小，当短响应到达时可能读取DMA池缓冲区中的陈旧数据。

CVSS 7.1 · High EPSS 0.26% · P16

Possible ATT&CK Techniques 1 AI

T1044

Affected Version Matrix 18

VendorProduct Version RangeStatus
Linux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179< c55da494dfb445fb28df3a9d293c2be6a299cd01 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 7720654b4842bcdfeb64bc002f6186041849e1e7 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 033dfa63bf6be2653441a1dccae4a8313a91bb9d affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< fc261397295b8ad0654cec747b0ec25ea0011995 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< a15b6d3136accb2bf84b04d9a3ddd991f7fbf1cb affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< b5daa920f44cb582272fc9bfaeb67408776cbaef affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< b2c1e5d9f1598cc1a4736d5c6bd1218f90805ee4 affected
cdae7c07e3e3509eaabc18c1640a55dc5b99c179< 4db2bd2ed4785dbadaeeab9f4e346b21ac5fb8eb affected
… +10 more rows
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I. Basic Information for CVE-2026-53146

Vulnerability Information
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Vulnerability Title
thunderbolt: Limit XDomain response copy to actual frame size
Source: CVE Program / CVE List V5
Vulnerability Description
In the Linux kernel, the following vulnerability has been resolved: thunderbolt: Limit XDomain response copy to actual frame size tb_xdomain_copy() copies req->response_size bytes from the received packet buffer regardless of the actual frame size. When a short response arrives, this reads past the valid frame data in the DMA pool buffer into stale contents from previous transactions. Use the minimum of frame size and expected response size for the copy length.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Linux kernel 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Linux kernel是美国Linux基金会开源的操作系统Linux所使用的内核。 Linux kernel 4.15版本存在安全漏洞，该漏洞源于tb_xdomain_copy函数在复制响应时未限制实际帧大小，当短响应到达时可能读取DMA池缓冲区中的陈旧数据。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Linux Linux cdae7c07e3e3509eaabc18c1640a55dc5b99c179 ~ c55da494dfb445fb28df3a9d293c2be6a299cd01 -
Linux Linux 4.15 -

II. Public POCs for CVE-2026-53146

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III. Intelligence Information for CVE-2026-53146

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Patches & Fixes for CVE-2026-53146 (8)

Same Patch Batch · Linux · 2026-06-25 · 146 CVEs total

CVE-2026-53247 9.8 CRITICAL net: ethernet: mtk_eth_soc: Fix use-after-free in metadata dst teardown
CVE-2026-53215 9.8 CRITICAL net: mvpp2: refill RX buffers before XDP or skb use
CVE-2026-53216 9.8 CRITICAL net: mvpp2: limit XDP frame size to the RX buffer
CVE-2026-53246 9.8 CRITICAL sctp: validate cached peer INIT chunk length in COOKIE_ECHO processing
CVE-2026-53151 9.8 CRITICAL rxrpc: Fix the ACK parser to extract the SACK table for parsing
CVE-2026-53221 9.8 CRITICAL ip6_vti: fix incorrect tunnel matching in vti6_tnl_lookup()
CVE-2026-53260 9.8 CRITICAL tcp: Add preempt_{disable,enable}_nested() in reqsk_queue_hash_req().
CVE-2026-53175 9.8 CRITICAL inet: frags: fix use-after-free caused by the fqdir_pre_exit() flush
CVE-2026-53176 9.8 CRITICAL IB/isert: Reject login PDUs shorter than ISER_HEADERS_LEN
CVE-2026-53228 9.8 CRITICAL ipv6: sit: reload inner IPv6 header after GSO offloads
CVE-2026-53131 9.4 CRITICAL netfilter: require Ethernet MAC header before using eth_hdr()
CVE-2026-53225 9.1 CRITICAL sctp: fix uninit-value in __sctp_rcv_asconf_lookup()
CVE-2026-53224 9.1 CRITICAL sctp: validate embedded INIT chunk and address list lengths in cookie
CVE-2026-53186 9.1 CRITICAL RDMA/srp: bound SRP_RSP sense copy by the received length
CVE-2026-53240 8.8 HIGH xfrm: iptfs: fix use-after-free on first_skb in __input_process_payload
CVE-2026-53170 8.8 HIGH accel/ethosu: reject DMA commands with uninitialized length
CVE-2026-53248 8.8 HIGH net: airoha: Fix use-after-free in metadata dst teardown
CVE-2026-53159 8.8 HIGH misc: fastrpc: fix DMA address corruption due to find_vma misuse
CVE-2026-53200 8.8 HIGH KVM: arm64: nv: Fix handling of XN[0] when !FEAT_XNX
CVE-2026-53188 8.8 HIGH RDMA/core: Validate the passed in fops for ib_get_ucaps()

Showing top 20 of 146 CVEs. View all on vendor page &rarr; →

IV. Related Vulnerabilities

Same product: Linux
Same vendor: Linux

V. Comments for CVE-2026-53146

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